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Finding the Fourth Proportional to 390,016.62, 585,046.80 and 109,512

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Solution

The fourth proportional to 390,016.62, 585,046.80 and 109,512 is: 164,274.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,016.62 : 585,046.80 = 109,512 : x
  2. Step 2: Convert to fraction form
    390,016.62/585,046.80 = 109,512/x
  3. Step 3: Cross multiply
    390,016.62x = 585,046.80 × 109,512
  4. Step 4: Simplify right side
    390,016.62x = 64,069,645,161.60
  5. Step 5: Solve for x
    x = 64,069,645,161.60/390,016.62
  6. Step 6: Final answer
    x = 164,274.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.